04-24-2013, 08:11 PM
If the values are close to what they are marked as then I can't see any harm in using them. It's been my observation that age makes them drift more then use, I have found NOS carbon comp resistors that have drifted in value just sitting in a drawer in a cabinet for 30+ years. This cabinet was stored in a cool, dry, basement before I got it so neither heat nor moisture was the issue in why they drifted.
Regards
Arran
Regards
Arran